<template>
  <Dialog v-model="dialogVisible" title="分配角色">
    <el-form ref="formRef" v-loading="formLoading" :model="formData" label-width="80px">
      <el-form-item label="用户账号">
        <el-input v-model="formData.username" :disabled="true" />
      </el-form-item>
      <el-form-item label="用户昵称">
        <el-input v-model="formData.nickname" :disabled="true" />
      </el-form-item>
      <el-form-item label="角色">
        <el-select v-model="formData.roleIds" multiple placeholder="请选择角色">
          <el-option v-for="item in roleList" :key="item.id" :label="item.name" :value="item.id" />
        </el-select>
      </el-form-item>
    </el-form>
    <template #footer>
      <el-button :disabled="formLoading" type="primary" @click="submitForm">确 定</el-button>
      <el-button @click="dialogVisible = false">取 消</el-button>
    </template>
  </Dialog>
</template>
<script lang="ts" name="SystemUserAssignRoleForm" setup>
  import * as PermissionApi from '@/api/system/permission'
  import * as UserApi from '@/api/system/user'
  import * as RoleApi from '@/api/system/role'

  const { t } = useI18n() // 国际化
  const message = useMessage() // 消息弹窗

  const dialogVisible = ref(false) // 弹窗的是否展示
  const formLoading = ref(false) // 表单的加载中：1）修改时的数据加载；2）提交的按钮禁用
  const formData = ref({
    id: undefined,
    nickname: '',
    username: '',
    roleIds: []
  })
  const formRef = ref() // 表单 Ref
  const roleList = ref([]) // 角色的列表

  /** 打开弹窗 */
  const open = async (row: UserApi.UserVO) => {
    dialogVisible.value = true
    resetForm()
    // 设置数据
    formData.value.id = row.id
    formData.value.username = row.username
    formData.value.nickname = row.nickname
    // 获得角色拥有的菜单集合
    formLoading.value = true
    try {
      formData.value.roleIds = await PermissionApi.getUserRoleList(row.id)
    } finally {
      formLoading.value = false
    }
    // 获得角色列表
    roleList.value = await RoleApi.getSimpleRoleList()
  }
  defineExpose({ open }) // 提供 open 方法，用于打开弹窗

  /** 提交表单 */
  const emit = defineEmits(['success']) // 定义 success 事件，用于操作成功后的回调
  const submitForm = async () => {
    // 校验表单
    if (!formRef) return
    const valid = await formRef.value.validate()
    if (!valid) return
    // 提交请求
    formLoading.value = true
    try {
      await PermissionApi.assignUserRole({
        userId: formData.value.id,
        roleIds: formData.value.roleIds
      })
      message.success(t('common.updateSuccess'))
      dialogVisible.value = false
      // 发送操作成功的事件
      emit('success', true)
    } finally {
      formLoading.value = false
    }
  }

  /** 重置表单 */
  const resetForm = () => {
    formData.value = {
      id: undefined,
      nickname: '',
      username: '',
      roleIds: []
    }
    formRef.value?.resetFields()
  }
</script>